"Exploring the Safety of Milk of Magnesia for Body Odor"
A reader asks if using milk of magnesia as a deodorant could harm the kidneys, but the topic has not been adequately studied. Another reader's uncle developed a severe vitamin B12 deficiency after taking omeprazole for years, which hindered his ability to absorb the vitamin. Additionally, a reader found success in treating what was assumed to be nail fungus with over-the-counter antibiotic cream.